/Engine/Source/Runtime/Experimental/Chaos/Public/EventManager.h
Register a handler that will receive the dispatched events
template<typename PayloadType, typename HandlerType> void RegisterHandler ( const [EEventType](API\Runtime\Chaos\Chaos__EEventType) & EventType, HandlerType * Handler, typename [TRawEventHandler](API\Runtime\Engine\Physics\Experimental\TRawEventHandler)< PayloadType, HandlerType >::FHandlerFunction HandlerFunction, typename [TRawEventHandler](API\Runtime\Engine\Physics\Experimental\TRawEventHandler)< PayloadType, HandlerType >::FInterestedProxyOwnerFunction InterestedProxyOwnerFunction )